Abstract:

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Municipal incinerator residue (MIR) was used as raw material to replace clay to
manufacture bricks. Brick specimens were substituted from 0 to 50 wt% MIR by 10 wt% increment
for clay. Clay-MIR brick specimens were fired at 800~1050°C for 2 h. Firing shrinkage, bulk density,
water absorption rate and compressive strength were investigated. Leaching procedure tests were also
conducted to characterize toxicity. Increasing MIR contents resulted in a decrease in water absorption
rate, firing shrinkage and increase in compressive strength of bricks. It was found that when brick
specimen with 50 wt% of MIR content was heat-treated at 1000°C for 2 h, a brick specimen could be
generated, which was compressive strength of 1256 kg/cm2, water absorption ratio of 6.8% and firing
shrinkage of 3.5%. This indicates that MIR is indeed suitable for the partial replacement of clay in
bricks

Abstract: The Hungarian roof tile plants settle near a discovered clay mine in every case thus they work with different content clays. Examining characteristics of certain clay layers is needed to ensure stable product quality. Some clay layers with significantly different content occur among the presently used ones, which need an extensive examination for the production of good quality items. Results of high quartz content clay usability examinations are shown in this paper. The aim of examinations is to determine the usability of frequently occurring high quartz content clays. In the course of tests high quartz content clay mineral was mixed in increased amounts to clay mineral for roof-tile production provided by the industrial partner. Shrinkage, porosity and mechanical properties were examined as a function of mixing ratio.

Abstract: A new environment-friendly wall material- the unfired brick is produced by using clay, carbide slag, fly ash and cement as the main raw materials，and certain amount of chemical excitator. The primary mixing ratio is designed on the basis of its mechanical properties and durability. When adopting water curing under normal temperature and atmosphere pressure，the compressive strength，flexural strength and frost resistance of the unfired brick are measured. The results reveal that the optimum mixing ratio for unfired brick is: Carbide slag 30%，fly ash 30%，cement 25% and clay 15%. For the unfired brick formed by vibration with the optimum mixing ratio，the min. compressive strength of each brick is more than 10 MPa, the overall properties meet the requirement as specified in standard JC 239—2001“Fly Ash Brick”.

Abstract: Through the analysis of the chemical and physical properties of the silt in Nantong, which were compared with the clay, the needs of silt raw material for sintered brick were discussed in the paper. The results showed that, the moisture content of the sail in Nantong were lower than that of the clay, the plasticity indexes of silt of Yangtze River in Nantong section concentrated around 12 which was ideal, the chemical constituents of the silt was similar to clay, part of the mineral contents were different. The silt can be used for replacing clay to produce wall materials. It would provide theoretical foundation of materials selection and usage for sludge products companies in Nantong, as well as the reference for the merging recombination and management in the industry.

Abstract: Weather resistance properties of the sintered clay body (SCB) mixed with various content of sewage sludge incineration ash (SSIA) has been investigated. The result indicates that the water absorption ratio of SCB mixed with SSIA increased linearly with the increase of the content of SSIA, while the saturation coefficient remained constant. After the freeze-thaw cycles, the SCB body mixed with SSIA showed a stable and smooth appearance. From the SEM results, the internal porosity and pore size of SCB raised significantly with the increase of content of SSIA.

Abstract: Ceramic products made from red clay to move the economy of Rio Grande do Norte. Among the most common ones are outstanding bricks, tiles and slabs in different sizes and shapes. In perspective to seek products with good quality in the ceramic industry, the characterization of the raw material is essential for obtaining an excite end product. The municipality of Apodi located in the Upper West Rio Grande do Norte has the ceramic industry as a sector of great economic importance in the site. However the absence of technology for characterization of the clays found in the region is the major problem for local entrepreneurs. The objective this study is to characterize the red clay one of the ceramics used by the municipality of Apodi-RN. The procedure will be done through the testing of Plasticity, Liquidity, linear shrinkage, absorption water, porosity, XRD and EDX.